Vaporizer



(No Modfuel'.)` A

P. HAWKES.

, VAPORIZER. Noi 416,913. Patented Dec. 10. .1889.

MMV/5%@ j @y UNITED STATES PATENT EEICE.

FRED. C. HAVVKES, OF SPRINGFIELD, MASSACHUSETTS.

VAPORIZER.

SPECIFICATION forming part of Letters Patent'No. 416,913, datedDecemberIO, 1889.

\ Application filed T une 17,

To all whom it may concern:

Be itknown that I, FEED; C. HAwKEs, a citizen of the United States,residing at Springeld,-lflampden county, State of Massachusetts, haveinvented a new and useful Vaporizer, of which the following is aspecification.

My improvements relate to that class of apparatus designed to contain avolatile iiuid and control the escape of the vapor therefrom; and itconsists in an improved medium for absorbing the fluid and improvedmechanism for recharging said medium and for adjustably projecting itinto the air to hasten evaporation therefrom.

My invention is fully illustrated in the accompanying drawings, inWhich- Figure I is a vertical central section of my vaporizer in aclosed position. Fig. II is a partial central section of the device inanoperative position, and Fig. III is a top plan View with the coverremoved. FigIV is a section of a modification, showing washers insteadof concentric rings.

In the drawings, B is a jar or can.

D is a cover completely4 closing the can when in the position shown inFig, I.

C is a cage formed of a disk bottom c, united to a top IVI by side barsh, the design of the cage being to give free access of any fluid in thecan B to the absorbentheld by said cage, and to that end the bottom cmay be perforated, as shown in Fig. I, or may be simply a cross-head, asin the top H.

Rising centrally from the bottom of can B and extending nearly to thetop of the can is a tubular guide and receiver E, hollow and providedwith orifices e, communicating with the body of the can. rlhe bottom cof cage C has a central hole therein, permitting it to pass over thetube E. The cage O is suspended from the top D by a screw G, passingthrough the center of the top and through the screw-hole fin top I-I.The screw, provided with a suitable handle g, by filling hole 45 f anddrawing together corresponding surfaces of tops H and D, practicallymakes the cover of the can and the cage one, so that when the can istightly closed to shut off evaporation the cage extends down into thecan nearly to its bottom, and so that if the cover 1889. SerialNo.314,605. (No modeh) D is raised the cage C will follow it, guided inthe can by the tube E.

From the top of cover vD and fixed thereto extends a slotted barI,outside of the can and parallel thereto, having through its slot a screwi from a stud b on the can, and having a thumb-nut m, by means of whichthe bar I may be bound at any point of its length to the outside of thecan.

I have found by experiment that the inin- 6o eral asbestus, having alarge power of absorbing, has that capacity largely increased by beingin the form of Vsheets in close contact, and that, after having itspores or the iuterstices between the surfaces of its sheets clogged inthe course of time by a residuum from the volatile fiuid used, it can bein the form in which I use it placed in the most intense heat to burnout every foreign material in it without changing its shape, so thatafter having 7o been purified by the fire the built-up mass of asbestuscan be returned to its placein the cage above described, to -be so usedindefinitely.`

In the drawings a web of closely-wound asbestus is shown confined in thecage Cin the form of a roll P, having a central orifice large enough topass easily over the tube E, though the roll may be built up, ifdesired, by a series of washers W to cause the lami- 8o nations to be ona plane at right angles `to that shown.

When it is desired to fill the can, the screw G is removed entirely toleave a free passage y to the mouth of the tube E, or, being unscrewedfrom the top H of the cage, the top VD is removed to leave the can andthe contents as shown in Fig. III. It will be seen' that the screw G,being run out of the top H of the cage, the cover D can be elevatedtoany 9o height to permit evaporation from the contents of the can, thecageremaining therein; but I make no claim to any method of evaporatingby an adj ust-able open mouth, the principleof my invention, apart fromthe peculiar absorbent, consisting in the elevation entirely clear ofthe walls of the can of a saturatedy absorbent, to regulate the rapidityof the evaporation by the surface exposed.

By means of the elevating-cage a surplus `Ico of fluid may be retainedin the can, into which the asbestus may be lowered from time to Y timeto be resaturated.

Now, having described my in vention,'what I claim is- 1. TheWithin-described improvements in vaporizers, consisting of thecombination, with an inclosing-can, of a removable cage fitting looselytherein and a packing of asbestus held by said cage and arranged thereinin layers to adapt it to be removed and replaced in the saine form.

2. In a vaporizer, the combination ofV Vthe inclosing-oase, a covertherefor, a cage attached to said cover, and a porous body Within andconnected to the cover by said cage, and a bar attached to the ooverandadjust-ably secured to the exterior of the case, whereby the cover andporous body may be more or less elevated, substantially as described.

3. The combination, with an inelosing-can, of a central guiding-tube E,provided with perforations, a cage C, packed with absorbent material andinclosing tube E, cover D, having removable screw G, uniting it to top Hof the cage, and bar I, fast to cover D and sliding under the clamp-nutm, all operating as and for the purpose set forth.

FRED. C. IIA\VKES.

Vitnesses:

R. F. HYDE, JASON PERKINS.

